For GTX 570s, the 1.00.722.3 TR'13 patch and the 314.21 Drivers make the game run very well. TressFX mostly behaves itself in SLI (SSAO Ultra still looks a little glitchy). And, TressFX with single-GPU looks great.

So, overall, definitely progress for Nvidia users.

One note though. Do not use the newest TR'13 patch with the 314.14 drivers in SLI. MASSIVE frame rate loss when using DoF.